From 369b8826939125fb8dd39c96dde0f54cf9dbaa27 Mon Sep 17 00:00:00 2001
From: Valentin Le Moign <valentin_le_moign@figureslibres.io>
Date: Thu, 28 May 2026 18:27:05 +0200
Subject: [PATCH] =?UTF-8?q?Affichage=20des=20dates=20:=20ann=C3=A9e=20seul?=
 =?UTF-8?q?e=20pour=20les=20Ouvrages,=20plage=20pour=20les=20s=C3=A9minair?=
 =?UTF-8?q?es?=
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---
 inc/post-card-helpers.php | 66 +++++++++++++++++++++++++++++++++------
 inc/single-helpers.php    | 18 ++++++++---
 2 files changed, 71 insertions(+), 13 deletions(-)

diff --git a/inc/post-card-helpers.php b/inc/post-card-helpers.php
index b85e61e..a3c9235 100644
--- a/inc/post-card-helpers.php
+++ b/inc/post-card-helpers.php
@@ -22,18 +22,66 @@ function thalim_get_card_data($post_id) {
         'card_link'            => '',
     ];
 
-    // Event date — date_de_debut (events), fallback to datetime (communications)
-    // Used for display instead of post_date when set
-    foreach (['date_de_debut', 'datetime'] as $date_key) {
-        $event_raw = get_post_meta($post_id, $date_key, true) ?: '';
-        if ($event_raw && !str_starts_with($event_raw, '0000-00-00')) {
-            $ts = strtotime($event_raw);
-            if ($ts) {
-                $data['card_event_date']     = date_i18n('d/m/Y', $ts);
-                $data['card_event_date_iso'] = date('Y-m-d', $ts);
+    // Category-based date formatting:
+    // - Séminaire (cat 11, not cat 12): "Du X au Y" from first/last linked séance dates
+    // - Ouvrage (cat 15): year only — includes the post.date fallback (overrides Twig default d/m/Y)
+    // - Default: date_de_debut > datetime > (empty → Twig falls back to post.date('d/m/Y'))
+    $cat_ids      = wp_get_post_categories($post_id);
+    $is_seminaire = in_array(11, $cat_ids, true) && !in_array(12, $cat_ids, true);
+    $is_ouvrage   = in_array(15, $cat_ids, true);
+
+    if ($is_seminaire) {
+        // Aggregate timestamps from linked séances (Pods `seances` meta = array of post IDs)
+        $seance_ts = [];
+        foreach (get_post_meta($post_id, 'seances', false) as $sid) {
+            foreach (['date_de_debut', 'datetime'] as $key) {
+                $raw = get_post_meta($sid, $key, true) ?: '';
+                if ($raw && !str_starts_with($raw, '0000-00-00')) {
+                    $ts = strtotime($raw);
+                    if ($ts) { $seance_ts[] = $ts; break; }
+                }
+            }
+        }
+        if (!empty($seance_ts)) {
+            sort($seance_ts);
+            $first = reset($seance_ts);
+            $last  = end($seance_ts);
+            $fmt   = 'd/m/Y'; // aligné sur le format standard des cards
+            if ($first === $last) {
+                $data['card_event_date'] = date_i18n($fmt, $first);
+            } else {
+                $lang   = thalim_current_language();
+                $prefix = $lang === 'en' ? 'From ' : 'Du ';
+                $infix  = $lang === 'en' ? ' to '  : ' au ';
+                $data['card_event_date'] = $prefix . date_i18n($fmt, $first) . $infix . date_i18n($fmt, $last);
+            }
+            $data['card_event_date_iso'] = date('Y-m-d', $first);
+        }
+        // else: leave empty → Twig falls back to post.date('d/m/Y')
+    } else {
+        // Default + ouvrage handling
+        $display_fmt = $is_ouvrage ? 'Y' : 'd/m/Y';
+        foreach (['date_de_debut', 'datetime'] as $date_key) {
+            $event_raw = get_post_meta($post_id, $date_key, true) ?: '';
+            $formatted = thalim_format_date($event_raw, 'fr', $display_fmt);
+            if ($formatted) {
+                $data['card_event_date']     = $formatted;
+                $data['card_event_date_iso'] = date('Y-m-d', strtotime($event_raw));
                 break;
             }
         }
+        // Ouvrage fallback: if no custom date, use post.date but show year only
+        // (overrides the Twig's default post.date('d/m/Y') fallback)
+        if ($is_ouvrage && !$data['card_event_date']) {
+            $post = get_post($post_id);
+            if ($post) {
+                $formatted = thalim_format_date($post->post_date, 'fr', 'Y');
+                if ($formatted) {
+                    $data['card_event_date']     = $formatted;
+                    $data['card_event_date_iso'] = date('Y-m-d', strtotime($post->post_date));
+                }
+            }
+        }
     }
 
     // Resolve top-level parent category slug for color theming and direct category name for display
diff --git a/inc/single-helpers.php b/inc/single-helpers.php
index bc2cf50..33e6dba 100644
--- a/inc/single-helpers.php
+++ b/inc/single-helpers.php
@@ -1,14 +1,15 @@
 <?php
 
 /**
- * Format a Pods datetime string (e.g. "2026-01-17 00:00:00") into natural French/English.
- * Shows time only if not midnight.
+ * Format a Pods datetime string (e.g. "2026-01-17 00:00:00") via date_i18n.
+ * Default format is "j F Y" (full month name, FR/EN per WP locale).
+ * Returns empty string for null/empty/"0000-00-00..." inputs.
  */
-function thalim_format_date($raw, $lang = 'fr') {
+function thalim_format_date($raw, $lang = 'fr', $format = 'j F Y') {
     if (!$raw || str_starts_with($raw, '0000-00-00')) return '';
     $ts = strtotime($raw);
     if ($ts === false || $ts < 0) return '';
-    return date_i18n('j F Y', $ts);
+    return date_i18n($format, $ts);
 }
 
 /**
@@ -90,6 +91,15 @@ function thalim_get_single_data($post_id) {
     if ($ts_debut) $data['date_debut_ymd'] = date('Y-m-d', $ts_debut);
     if ($ts_fin)   $data['date_fin_ymd']   = date('Y-m-d', $ts_fin);
 
+    // Ouvrages (cat 15): override display to year only — raw timestamps and
+    // *_ymd fields stay full-precision so sorting/filtering on index pages
+    // (`thalim_event_date_order`) keeps working.
+    if (in_array(15, wp_get_post_categories($post_id), true)) {
+        $data['date_de_debut'] = thalim_format_date($raw_debut, $lang, 'Y');
+        $data['date_de_fin']   = thalim_format_date($raw_fin, $lang, 'Y');
+        $data['datetime']      = thalim_format_date(get_post_meta($post_id, 'datetime', true), $lang, 'Y');
+    }
+
     // --- External links (up to 3) ---
     for ($i = 1; $i <= 3; $i++) {
         $url = get_post_meta($post_id, 'lien_externe_' . $i, true);